Sadara Chemical, a $20 billion petrochemical joint venture between national oil giant Saudi Aramco and Dow Chemical, has started operating its mixed-feed cracker at the venture's petrochemical complex in Jubail, it said in a statement on Sunday.

The facility can process both ethane and naphtha and is the first mixed-feed cracker in the GCC, according to Reuters.

Sadara Basic Services Co said that the financial impact on the company would be reflected by the end of the third quarter.

In January, Sadara's chief executive Ziad al-Labban told Reuters that the cracker was scheduled to be commissioned in March and would eventually reach feeds of 85 million standard cubic feet per day of ethane and 50,000 barrels per day of naphtha.

The Sadara complex, comprising 26 integrated facilities, is the largest petrochemical facility to be built in a single phase. All facilities are scheduled to be commissioned by the end of 2017.